/*
 *
 * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials
 *   provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY
 * DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT OF OR
 * RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE OR
 * ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE
 * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT,
 * SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF
 * THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 * 
 */

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import cart.*;
import util.Currency;

/**
 * An HTTP Servlet that responds to the GET method of the
 * HTTP protocol.  It returns a form to the user that gathers data.
 * The form POSTs to another servlet.
 */
public class CashierServlet extends HttpServlet { 

    public void doGet (HttpServletRequest request,
                       HttpServletResponse response)
   throws ServletException, IOException
    {
        // Get the user's session and shopping cart
        HttpSession session = request.getSession();
    		ResourceBundle messages = (ResourceBundle)session.getAttribute("messages");

        ShoppingCart cart =
            (ShoppingCart)session.getAttribute("cart");
        if (cart == null) {
            cart = new ShoppingCart();
            session.setAttribute("cart", cart);
        }
        
   // set content-type header before accessing Writer
      response.setContentType("text/html");
      PrintWriter out = response.getWriter();
      Currency c = (Currency)session.getAttribute("currency");
      if (c == null) {
         c = new Currency();
         c.setLocale(request.getLocale());
         session.setAttribute("currency", c);
      }
      c.setAmount(cart.getTotal());

   // then write the data of the response
        out.println("<html>" +
                    "<head><title>" + messages.getString("TitleCashier") + "</title></head>");

        // Get the dispatcher; it gets the banner to the user
        RequestDispatcher dispatcher =
               getServletContext().getRequestDispatcher("/banner");
                                       
            if (dispatcher != null)
               dispatcher.include(request, response);
               
       // Print out the total and the form for the user
        out.println("<p>" + messages.getString("Amount") +
                    "<strong>" + c.getFormat() + "</strong>" +
                    "<p>" + messages.getString("Purchase") +
                    "<form action=\"" +
                    response.encodeURL(request.getContextPath() + "/receipt") +
                    "\" method=\"post\">" +
                    "<table>" +
                    "<tr>" +
                    "<td><strong>" + messages.getString("Name")+ "</strong></td>" +
                    "<td><input type=\"text\" name=\"cardname\"" +
                    "value=\"Gwen Canigetit\" size=\"19\"></td>" +
                    "</tr>" +
                    "<tr>" +
                    "<td><strong>" + messages.getString("CCNumber") + "</strong></td>" +
                    "<td>" +
                    "<input type=\"text\" name=\"cardnum\" " +
                    "value=\"xxxx xxxx xxxx xxxx\" size=\"19\"></td>" +
                    "</tr>" +
                    "<tr>" +
                    "<td></td>" +
                    "<td><input type=\"submit\"" +
                    "value=\"" + messages.getString("Submit") + "\"></td>" +
                    "</tr>" +
                    "</table>" +
                    "</form>" +
                    "</body>" +
                    "</html>");
        out.close();
    }

    public String getServletInfo() {
        return "The Cashier servlet takes the user's name and " +
               "credit card number so that the user can buy the books.";

    }
}
